Resources Contact Us Home
Holographic digital watermark

Image Number 5 for United States Patent #7551750.

A digital watermark which is incorporated, perceptibly or imperceptibly, into a diffractive device such as a hologram. When applied to protect and/or authenticate a document of value or a product, the device provides an increased degree of overt and covert security, and permits tracking of the sale, use or other parameters associated with the product and/or document of value.

  Recently Added Patents
Method for using a super-slippery thin layer characterized by the method for making same
Requirements model comparative analysis method for effort estimation in customizing a network monitoring and control system
Shared system to operationally connect logic nodes
Systems and methods for assigning a template to an existing network configuration
Methods and apparatus for address translation functions
Controller for machine tool and five-axis simultaneous control machine tool controlled thereby
Cable preparation tool
  Randomly Featured Patents
Animal trap attachment
Four-layer puncture resistant film
Paintball cylinder refilling apparatus
Air-cooled centrifuge
Articulated vehicle
Deburring apparatus
Functional addition polymers and a method for their preparation
Aircraft missile launcher snubber apparatus
Process for utilizing waste heat and for obtaining water gas during the cooling of incandescent coke
Durable flame retardant finishes for textile materials